/Engine/Source/Runtime/Core/Public/Misc/App.h
Gets a frame number generated by the engine's timecode provider. The current frame time is used to generate a timecode value. The optional will be false if no timecode provider was set or is not in a synchronized state.
the current frame time.
static [TOptional](API\Runtime\Core\IO\TOptional)< [FQualifiedFrameTime](API\Runtime\Core\Misc\FQualifiedFrameTime) > GetCurrentFrameTime()